An investigation of vitamin D nutritional status in children after outbreak of coronavirus disease 2019
DENG Yong-Chao, TANG Xi-Chun, LI Xun, DONG Cai-Xia
CJCP . 2021, (11): 1091 -1096 .  DOI: 10.7499/j.issn.1008-8830.2106155